%ACOS   Inverse cosine.
%   ACOS(X) is the arccosine of the elements of X. Complex
%   results are obtained if ABS(x) > 1.0 for some element.

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 5.3 $  $Date: 1997/11/21 23:27:58 $
%   Built-in function.
